
public abstract class Operation {
	private double num1;
	private double num2;
	
	public Operation(){
		
	}
	
	public void setNum1(double num1){
		this.num1 = num1;
	}
	
	public double getNum1(){
		return this.num1;
	}
	
	public void setNum2(double num2){
		this.num2 = num2;
	}
	
	public double getNum2(){
		return this.num2;
	}
	
	public abstract double getResult();
}

